Bill has spent more than 30 years focusing on Delaware corporate and commercial litigation, with an emphasis on cases involving mergers and acquisitions, proxy contests and consent solicitations, and shareholder class and derivative actions. 

His litigation practice concentrates on cases pending in the Delaware Court of Chancery and Delaware Supreme Court as well as matters in the federal court both in Delaware and in other jurisdictions.  He also advises corporate clients and boards of directors with respect to litigation and transactional matters including representations of special negotiating committees, shareholder demand review committees, and special litigation committees.

Bill is a Fellow to the American College of Trial Lawyers and serves as a member of the Advisory Board for the John L. Weinberg Center for Corporate Governance, Alfred Lerner College of Business & Economics, University of Delaware, and the NYU School of Law Institute for Corporate Governance and Finance.

Bill is the author of numerous articles on Delaware corporate law and contributed chapters on appraisal rights and inspection of corporate/partnership books and records to a five volume corporate law treatise.  He frequently presents before business and professional audiences on Delaware corporate law, and has been a guest instructor at M&A law classes at Harvard, Penn, Cal-Berkeley, Stanford, New York University, Columbia, Penn State Dickinson Law, Hofstra, and Delaware Law School.


Bill has acted as lead or co-counsel in numerous significant litigations involving Delaware corporate law issues.

Represented Southwest Gas and directors in takeover dispute launched by activist Icahn Partners. Icahn Partners LP v. John P. Hester, Del. Ch., C.A. No. 2021-1031-KSJM

Represented medical devices company Channel Medsystems, Inc. in litigation over Boston Scientific Corporation’s attempt to terminate its merger agreement. Channel Medsystems, Inc. vs. Boston Scientific Corporation and NXT Merger Corp., Del. Ch., C.A. No. 2018-0673-AGB

Represented generic pharmaceutical company Akorn Inc. as co-lead trial counsel in litigation over whether global healthcare company Fresenius improperly terminated a merger agreement with Akorn. Akorn Inc. v. Fresenius Kabi AG et al., Del. Ch., C.A. No. 2018-0300-JTL

Represented Berkshire Hathaway in connection with the merger between USG and Knauf. Case involves allegations that Knauf violated Section 203 of the Delaware General Corporation Law (“DGCL”). In re: USG Corporation Stockholder Litigation, Del. Ch., C.A. No. 2018-0602-VCG

Represented Anthem, Inc. in litigation with Cigna over terminated merger. In Re Anthem-Cigna Merger Litigation, C.A. No. 2017-0114-JTL

Argued the first case of its kind before the Delaware Supreme Court regarding the application of the Corwin v. KKR doctrine to a tender offer pursuant to Section 251(h) of the DGCL. Former stockholders of Volcano sued in connection with the acquisition of Volcano by Philips. Court below dismissed the claims against the Volcano directors based on Corwin doctrine and Supreme Court affirmed. In re Volcano Corporation Stockholder Litigation, C.A. No. 10485-VCMR (appeal Del. Supr. No. 372, 2016).

Represented Abbott in connection with its acquisition of Alere and related litigation between the two healthcare companies regarding whether the merger should proceed. In: re Alere-Abbott Merger Litigation, Del. Ch., C.A. No. 12963-VCG.

Represented a special committee of NRG Yield Board as lead counsel in connection with litigation challenging a recapitalization transaction. Argued motion to dismiss requesting an expansion of the MFW doctrine outside of the “freeze-out” context. IRA Trust of FBO Bobbie Ahmed et al. v. Crane, Del. Ch., C.A. No. 12742-CB.

Represented General Motors Directors in connection with shareholder derivative action arising out of ignition switch issues. Delaware Court of Chancery granted defendants’ motions to dismiss, and Delaware Supreme Court affirmed. In re: General Motors Co. Derivative Litigation.

Represented drilling company Nabors in connection with merger with C&J Energy and related litigation. C & J Energy Services, Inc. v. City of Miami General Employees’, No. 655/657 (Del. Dec. 19, 2014).

Represented Third Point, LLC in Court of Chancery action challenging poison pill adopted by the Board of Directors of Sotheby’s. Third Point, LLC v. Ruprecht, C.A. Nos. 9469-VCP, 9497-VCP, 9508-VCP.

News & Insights

Honors & Recognitions

Chambers USA: Guide to America’s Leading Lawyers, ranked in Delaware Chancery, since 2004

The Legal 500 US, Leading Lawyer in M&A litigation, since 2017

Benchmark Litigation, Local Litigation Star, 2013-2024

Delaware Super Lawyers, listed in business litigation, 2007-2024; ranked number one on the “Top 10” list for Delaware, 2018-2020; listed in the “Top 10”, 2021-2024

The Best Lawyers in America, leading Delaware litigator, since 2007

Who’s Who Legal, listed in M&A and corporate governance, 2014-2022

Lawdragon’s 500 Leading Lawyers in America, listed, 2012-2015, 2018, 2022, 2024

Delaware Business Times, recognized among inaugural “Delaware 222” list of impactful leaders in the First State, 2024

Professional & Civic

American Bar Association (Business Law Section, Committee on Business and Corporate Litigation, and Securities Litigation Committee (M&A/Proxy Litigation Subcommittee, Co-Chair))

American College of Trial Lawyers (Fellow)

Arsht-Cannon Fund (Advisory Board)

Combined Campaign for Justice (Co-Chair)

Court of Chancery Rules Committee (Chairman)

Delaware Board of Bar Examiners (appointed by Delaware Supreme Court, 2000-2006)

Delaware Commission on Continuing Legal Education (Chairman, 2004-2007)

Dickinson Law Board of Overseers (Advisory Board)

Delaware State Bar Association (Corporation Law Section and Committee on Professional Ethics)

Delaware Supreme Court Rules Committee  (Former Member)

John L. Weinberg Center for Corporate Governance, University of Delaware (Advisory Board)

NYU School of Law Institute for Corporate Governance and Finance (Advisory Board)

Sanford School (Board Member, 2008-2022; President of Board, 2013-2017)

Tulane Corporate Law Institute (Co-Chair)

University of Delaware (Board of Trustees, Chair of Audit Visiting Committee, 2019-2022; Chair of Student Life & Athletics Committee, 2023-present; 2023 UD Alumni Association Award Recipient)

William H. Heald Scholarship Committee (Chair)


  • Law Clerk to the Honorable Maurice A. Hartnett, III, Delaware Court of Chancery, 1989-1990


Penn State Dickinson Law, JD, 1989
Dickinson Law Review, articles editor, 1988-1989
Woolsack Honor Society

Appellate Moot Court Board

United States Attorney Clinic

University of Delaware, BSBA, finance, 1985


  • Delaware, 1989
  • Pennsylvania, 1990
  • US District Court for the District of Delaware, 1991
  • US Court of Appeals for the Third Circuit, 2002

Chambers USA market commentators say Bill is “a fountain of knowledge, he’s just a phenomenal lawyer.” Peers describe him as a “first-rate litigator with terrific judgment,” “front and center on every big litigation,” and one source praises his keen “business sense.”

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